'Iron rimmed' in the Bible

The descendants of Joseph said, "The whole hill country is inadequate for us, and the Canaanites living down in the valley in Beth Shean and its surrounding towns and in the Valley of Jezreel have chariots with iron-rimmed wheels."

The whole hill country will be yours; though it is a forest, you can clear it and it will be entirely yours. You can conquer the Canaanites, though they have chariots with iron-rimmed wheels and are strong."